实现OSI七层协议的低两层协议的主要网络设备是( )。
A．网络接口适配器
B．集线器
C．堆栈式集线器
D．交换机
参考答案：A
Which of the following is right?
A．Are you belong to the UN peace-keeping force?
B．Which computer does this mouse belong to?
C．This strange vegetable is belong to the potato family.
D．The gold ring is belonged to her.
简述村集体经济组织财务管理制度的主要内容。
